Patna: Senior BJP leaders from Bihar joined Prime Minister Narendra Modi and party president Amit Shah in observing a day's fast to protest against the obstruction of Parliament by the Congress.

But there was a voice of dissent as well from within as one BJP MP reminded the fasting leaders about its past stand when the party was in the Opposition.

In Patna, Union minister for law and justice Ravi Shankar Prasad sat on a hunger strike at Gardanibagh, where he spewed venom on the Congress for the Parliament logjam during the budget session.

Fellow Patna resident and Patna Sahib MP, Shatrughan Sinha, however, came up with a series of questions on his Twitter handle to question the logic behind the fast.

One of Sinha's tweets said: "What is reason Sir behind this Upwaas (fast), Is it for Parliament not running smoothly? Is the Opposition entirely responsible for it?... Many a times in the past when we were in the Opposition, we did not let it work for days, weeks & months..."?

He came up with one more bouncer. "Is it also true that some of our prominent leaders of today had made a statement in the past both in and outside Parliament that the smooth functioning of Parliament is the sole responsibility of the Govt. What is our stand today Sir, let's clarify once and for all..." Sinha said in another tweet.

Prasad, on the other hand, justified the protest.

"The budget session happens to be one of the most important sessions of Parliament. Congress didn't allow it to run. We are observing the fast to share our pain with people on this issue," he said.

The minister added that several important bills, including the fugitive bill which would have helped in bringing back persons like Vijay Mallya and Nirav Modi, could not be introduced.

Senior party leader Nand Kishore Yadav, who joined Prasad during the fast, said the Opposition leaders were behaving in this manner because they were unable to digest the good work being done by the son of a poor family (read Prime Minister Modi).